한국   대만   중국   일본 
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تمثيل الدوال الأسية في جملة الإحداثيات الديكارتيّة، فاللون الأسود ذو الأساس (e)، واللون الأحمر ذو الأساس 10، واللون الأزرق ذو الأساس 1/2، نلاحظ أن جميع المنحنيات قطعت النقطة (0، 1).
????? ?????? ?????? ?? ???? ?????????? ???????????? ?????? ?????? ?? ?????? (e)? ?????? ?????? ?? ?????? 10? ?????? ?????? ?? ?????? 1 / 2 ? ????? ?? ???? ????????? ???? ?????? (0? 1).
????? ?????? ?????? ?? ???? ?????????? ???????????? ?????? ?????? ?? ?????? (e)? ?????? ?????? ?? ?????? 10? ?????? ?????? ?? ?????? 1 / 2 ? ????? ?? ???? ????????? ???? ?????? (0? 1).
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????? ?????? ??? +∞ ??? ???
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????? ?????? ??? -∞ ??? ???
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?????? ?????? ( ??????????? : Exponential Function )? ?? ?? ???? ????? ??? ????? ??? ? ??? ????? ???? ?? ????? 1? ??? ??? ??? ?????? ???? ??????? ????? ???? ????? ??? ? ??? ??? ??? ??? ?????? ???? ??????? ????? ???? ??? ??? . [1] [2] [3]

???? ???? ???? [ ??? ]

??: ??:

???? ??? ?????? ??????:

y = ? ?????? ????? x ? ????? ?????? ??????:
y = ? x
??? ?> ???.

?? ?? ?????? ?????? ???? ????:

X = y n

?????? ?? ??????? ?????? ???? ???? ????? (exp(n. ??? ????? ???? ???? ???????? ?????? ???? ?? ???? ??? e ?? ?????? ??????? ?????? ??? ????? . ??? ??? ?????? ?????? ??? ????????? ????? ?? ???????? ????????? ???????? ?????????? ???????? ??????????? ???????? ?????? ?? ??????. ??? ????? ??????? ?????? ≪??≫ ???? ?? e.

???? ????? [ ??? ]

???? ?????? ?????? ???? ????? ??????. ??? ???? ?? ??????? (??????)? ??? ??? ???? ?????? (??????) ????? ??????? (??????) ??? ?? ????? ?????? ?????? ???? ??????? ?? ?????? ?????? ????? ????? 1 (??????). ????? ?????? ???? ?????? ( ?????? ) ?? ?????? ?????? ??????? ?????? (???? ??????).

??????? ?????? ?????? ?????? ?? ???? ???? ??????? ??? ????.

?? ???? ?????? ??????:

a 0 = 1
a 1 = a

?????? ??????? ?????? ?????? ?? ?????????? (log) ?? ?????? a ??? ???? ??? x ??? ???? ?????? ??? ?????:

??? x ??? ?????. ????? log ?? ??? ??????? ????? ??? ?????????? ?????? 10.

???? ????? ?????? ?????? ??? ?? ???? ???  :

?????? ???????? ??????? ?????:

...?...

?????? ??? ???????? ??? ?? ????????? ???????? ??????? ? ???? ???? ????????? ???????? ???????? .

?? ??? ?????? ?????? ????????? ?? ?????? ??? ????????? ??????? ????????? ?????? ????????? ???????? ?????????? ?? ?????? ??? ?????? e ?? ??????????? ??????? ????? ???? ?? ?????? ln ? ????? ≪?????????? ???????≫.

?????? ?????? ?????? e ?? ?????? ??????? ???? ???? ???????:

?? ???? ?? ???????? ????????? ?? ?????? ??????.

?????? ?????? ?????? ??????? e [ ??? ]

?????? ?????? ????????
الدالة الأسية الطبيعية تكاد تكون أفقية عند القيم السلبية للأس عندما يكون الأساس أكبر قطعا من الواحد، ثم تتزايد بسرعة في القيم الإيجابية، وتساوي 1 عندما تساوي قيمة x الصفر.
?????? ?????? ???????? ???? ???? ????? ??? ????? ??????? ???? ????? ???? ?????? ???? ???? ?? ??????? ?? ?????? ????? ?? ????? ?????????? ?????? 1 ????? ????? ???? x ?????.
?????? ?????? ???????? ???? ???? ????? ??? ????? ??????? ???? ????? ???? ?????? ???? ???? ?? ??????? ?? ?????? ????? ?? ????? ?????????? ?????? 1 ????? ????? ???? x ?????.
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(?????)
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??????/??????? ??? ????? 1
????? ?????? ??? +∞
????? ?????? ??? -∞
??????/??????? ??? 1 e
???? ??????


???? ?????? ?????? ????? ???? ?????? ?? ?????? ??????? e (?????? ??? ?????? ??????? ?????? ??????? ≪??≫ ???? ?? ??????? ?? ?????? e).

????? ?????? ??????????:

(x = exp(n

??? n ?? ????? ?????? ?????? ??????? ?????? ≪?≫ ????? ????? 2.718281828

????? ?? ?????? ??????? ????? ?????????.

?? ????????:

x = e n

?? ????? ?????? ?????? ?????? ??????? e ??????? ???????:

???? ????? ????? ???????? ????????.(ln a ?? ?????????? ??????? ?????? ??????? e ???? ?????????? ?????? 10)

????? ??? ?????? ?? ????? ???? ???? ???? ?????? e.

?????? ?????? ?????? ??????? e ????? ???? ?? ???????? (???: ????? ????? ????? ????????? ?? ??? ????? [???? ?????]) ? ??? ???????? (???: ?????? ???? ??????? ??? ???? ??????? )

??? ???????? ??????? ??? ?????? ??????????? ??? ?????? ???? ???? ???? ???? ?????? ?????? ?? ????? x = e n ??? n = t.c ??? ????? ??? ??????. ???? ????? ??? ????? ?????? ?? ????? ???? ???? ????? ?????? ?? ????? ??? ?????? ?????? ???????? ?? ??? ???? ???????? ?? x = e -t.c .

  • ????? ???? n ????? ???? ?? ????? ? ???? ????? ???? ?? ?????? ??? ???? ?????? ????????? ??? ???? ?????? ???? n = t.c ??? t ????? ????? ? c ????? ?????? ?????? [1/?????] ? ????? ?? ???? ?????? ???? ?? ?????.
  • ?????? ????? ??????? ????? ?????? ?????? ?????? ?????? e. ????? ??? ????? ?????? ?????????? ??????? ??? ?????? ?? ????? ??? ????? ?????.

??????? ?????? ?????? ?????? ?????? e [ ??? ]

???? ????? ?????? ?????? ?????? e ???? ??? ???????? ??? ??? ??????? ???? ??????? ???????? ??????? ??? :

??? ????? ???? ????? e x ??? ???????? ???????:

?? ???? ????? ??????? ???????:

????? ?????? ?????? ?????? e [ ??? ]

????? ?????? ?????? ?????? e ?????? ?????? ???????? ?????????:

?????? ????? ??? ?????:

???? ?????? ?????? ?????? ??????? e ?? ??????? ???? ??? ???? ???????. ???? ???? ????? ?????? ?????? ???????? ????? ?? ??? ???????? ?????????. ????? ???? ????:

??? ln a ?? ?????????? ?????? ??????? e ?????? ????????:

??? ??? ???????? ?? ???? ??????? ?????????? ??????? ??? ???????? ????? ???? ??? ???? ????? e ?? ???? ??????? ?????? ≪??????≫ ?? ????.

???????? ????????? ?? ????? ??? a ? b ????? ??????? [ ??? ]

???? ???? ?????? e: ????? ??????? ?????? ???????? ?????? ???? ??? ??? ????? ?????.

?? ?? ??? ???????? ????????? ????? ?? ???? ???? ???? ??? ????? ?????? ???? ????????? ??? ?????? ???????

????:

????? ?????? ???????? ????? ????? :

??????? ??? ???????? ?????? ??? ??????? (N(t ???? ?? ????? ??? ???? ????? t ?? ????? ????? ?????? N_0 ????? ??? ??????? (??? t = 0).

??????: ??? ??? ?????? ???????? ?? ??????? ??? ????? ?? ????? ?????? ????? ? ?????? ?????????? ?? ??????????? ??? ?????????? -40 ????. ??????? 1/ ????? .

???????? ???? [ ??? ]

???? ????? ?? ?????? ??????? ???????? ???

??????? ?????

????? ??? ???????:

??????? ??????

????? ??? ???????:

????? [ ??? ]

???? ?????? ?????? ???? ???? [ ??? ]

????? ??????????: ????? ???????? ??? ????? ????? ????????? ?????? ?? ????? ??? ????? ??????? ????? ????????. ?? ????? ??????? ???????? ????? ?????? ????????.

?? ???? ??? ?????????? ??? 3 ????????:

N = 2 3

N = 8

???? ????? ????? ??? ?????????? ??? 6 ????????? ???? ???????? ??????:

N = 2 6

N = 64

?? ?? ??? ?????????? ??????? ?? ?????? ???? ??? ??? ???????? ???? 64 ???????.

????? ?????? ?????? ?????? ??????? e [ ??? ]

??????? ???????:

???? ??? ???? ???? ????? 4 ?????? ????? ??? ??? ???? ??????? ??? ??? ????? ??? ??? ???? ????? ?????? ?????? 2,5 %?

???? ???????? ?????:

N = 4. e 0,025.6

??:

(N = 4. Exp(0,025.6

????????:

????? ???? N = 4,647 ??? 6 ?????.

???? 3 :

????? ??????: ?????? ???? ??? ?????? ?? ???? ??????? ?????? ???? ????? 2 ?0 % ?????? ??? ???? ????? ??? 170 ????.

N = 1. e 0,002.170

N = 1. e 0,34

???????? ??????? ???? ??? ????? ????? ????? 4 ?1 ???? 170 ???.

???? 4:

???? ????? ?????? ????????? ?? ??? ?????. ???????? ??:

??? ???????? h ????????? ??? ??? ????? .

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)

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????? [ ??? ]

  1. ^ Courant? Robbins (1996). Stewart (??????). What is Mathematics? An Elementary Approach to Ideas and Methods (?. 2nd revised). Oxford University Press. ?. 448. ISBN : 0-13-191965-2 . ????? ?? ????? ?? 2019-12-19. This natural exponential function is identical with its derivative. This is really the source of all the properties of the exponential function, and the basic reason for its importance in applications…
  2. ^ Rudin? Walter (1976). Principles of Mathematical Analysis (PDF) . New York: McGraw-Hill. ?. 182. ISBN : 9780070542358 . ????? ?? ????? (PDF) ?? 2020-05-20.
  3. ^ HP 48G Series ? Advanced User's Reference Manual (AUR) (?. 4). ?????-?????? . ?????? 1994 [1993]. HP 00048-90136, 0-88698-01574-2. ????? ?? ????? ?? 2016-08-06 . ???? ???? ?????? 2015-09-06 .